<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>文件下载</title>
</head>
<body>
<!--<form action="/download" method="post">-->
<!--    <input type="submit" value="壁纸.png" name="filename" >-->
<!--</form>-->
<a href="/download?filename=壁纸.png">
    下载
</a>
</body>
</html>